Lightweight Refractory Castable
Lightweight Refractory Castable
The lightweight refractoty castable is a kind of ideal material in the insulation of high temperature kilns. Many customers choose this product because the lightweight insulating castable refractory is easy to use and has good properties. The main components of lightweight castable are aluminate cement, high alumina fines, ceramsite, etc. In addition, customers can also request to add specified additives. This product has the advantages of light volume, high compressive strength, and strong acid corrosion resistance. Lightweight castable have higher fluidity and are more convenient to use.
Parameters of Lightweight Refractory Castable
Item/Grade | QJ-0.5 | QJ-0.8 | QJ-1.0 | QJ-1.1 | QJ-1.3 | QJ-1.5 | QJ-1.8 | |
Bulk Density (g/cm³) | 0.5 | 0.8 | 1.0 | 1.1 | 1.3 | 1.5 | 1.8 | |
Max. Service Temperature/℃ | 1150 | 1200 | 1250 | 1250 | 1300 | 1300 | 1350 | |
Thermal Conductivity Coefficient ≤/[W/(m·K)] | 350℃ | 0.15 | 0.25 | 0.3 | 0.4 | 0.45 | 0.6 | 0.65 |
700℃ | 0.20 | 0.30 | 0.4 | 0.45 | 0.5 | 0.7 | 0.75 | |
Cold Crushing Strength ≥/MPa | 110℃*24h | 1.5 | 2.0 | 4.0 | 5.5 | 10 | 15 | 20 |
1000℃*3h | 1.5 | 2.0 | 5.5 | 6.5 | 15 | 20 | 30 | |
Permanent Linear Change (1000℃*3h)/% | -1.5 | -1.0 | -1.0 | -0.5 | -0.5 | -0.5 | -0.5 | |
